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chem 104 final

chapter 23

QuestionAnswer
What name is given to the intermediate in an enzyme-catalyzed reaction? Enzyme-substrate complete
Which of the following will cause the rate of enzyme activity to first increase and then level off? increasing the substrate concentration.
Which of the following is the reason that trypsin is synthesized as trypsinogen? trypsin would attack the body's natural proteins.
Which of the following is associated with noncompetitive inhibition? allosterism
In which type of inhibition is it not possible to restore the maximum rate of enzyme activity by adding additional substrate? noncompetitive inhibition
Which of the following is true? the majority of enzymes are globular proteins.
In which type of inhibition is it possible to restore the maximum rate of enzyme activity by adding additional substrate? Competitive inhibition.
Which of the following is true of enzymes? both a and b, (think about what an enzyme does and what it is.)
What is the general name used when the product of a reaction sequence inhibits an earlier step in that sequence? Feedback control
In Which type of inhibition does the inhibitor bind to the active site? Competitive inhibition.
The names of enzymes are often derived from which of the following? both a and b, (~where they catalyze an what they catalyze?)
Which of the following will cause the rate of enzyme activity to increase linearly? increasing the enzyme concentration
Which of the following is commonly associated with protein modification? Phosphorylation/dephosphorylation
Which of the following is true of all allosteric enzymes? Binding at one site affects protein function at a second site.
Transition- state analogs do which of the following ? all of the above,(mimics transition state of substrate experimentally used to verify active site clinically inhibit enzymes used to design artificial enzymes.)
Which of the following is true of isozymes? They are different forms of the same enzyme found in different tissues.
Which of the following can cause enzyme activity to either increase or decrease? both a and b,(ph and temp?.)
What term is used to describe a species which affects the functioning of an allosteric enzyme? regulator
Which of the following is used in diagnosing infectious hepatitis? ALT (Alanine aminotransferase .)
which of the following explains why succinylcholine is used as a muscle relaxant? it is slowly hydrolyzed by acetylcholinesterase
Which of the following is another name for a proenzyme? Zymogen
Which of the following are monitored to diagnose the severity of a heart attack? All of these. (AST,LDH,CPK,PHI)
What name is given to any (organic or inorganic) nonprotein portion of an enzyme? cofactor
What name is given to the molecule on which the enzyme works? substrate
In addition to proteins, which type of molecules sometimes function as enzymes? RNA
Which of the following is a foreign substance that produces an immune response? An antigen
In which type of inhibition does the inhibitor bind to the protein at a site other than the active site? noncompetitive inhibition
What disease is diagnosed by monitoring amylase activity? pancreatic disease
What disease is diagnosed by monitoring acid phosphatase activity? prostate cancer
An abzyme is which of the following? An antibody with catalytic ability
What is the name given to a material which slows down enzyme function? Inhibitor
What name is given to the organic cofactor of an enzyme? coenzyme
Created by: anel